Title :
Magnetic properties and dynamic domain behavior in grain-oriented 3% Si-Fe
Author :
Nozawa, Tadao ; Mizogami, Masato ; Mogi, Hisasi ; Matsuo, Yukio
Author_Institution :
Dept. of Electr. Eng., Kyushu Kyoritsu Univ., Fukuoka, Japan
fDate :
3/1/1996 12:00:00 AM
Abstract :
The magnetic properties of soft magnetic materials are based on dynamic behavior of magnetic domain walls. Many domain structure studies have contributed to the progress of magnetic materials. In this paper, the present state of new development in advanced grain-oriented silicon steel is introduced through the aid of dynamic domain observation of real materials with forsterite film. The basic magnetic phenomena of material, such as the dynamic behavior of surface closure domains, domain wall pinning, and domain structure under rotating magnetization, are explained mainly through the observation of static and dynamic domain wall movements under a high-voltage scanning electron microscope. A few techniques for manufacturing the latest grain-oriented silicon steel, such as improvement in alignment with (110) [001] orientation, increase in the number of mobile domain walls, and relaxation of domain wall pinning, are also described through the observation of dynamic domain patterns. Examples of core losses are given for ideal grain-oriented silicon steel as industrial material, and future developments are predicted
Keywords :
electron microscopy; ferromagnetic materials; iron alloys; magnetic domain walls; scanning electron microscopy; silicon alloys; soft magnetic materials; Si-Fe; alignment; core losses; domain dynamics; domain structure; domain wall pinning; forsterite film; grain-oriented silicon steel; high-voltage scanning electron microscopy; industrial material; magnetic properties; rotating magnetization; soft magnetic material; surface closure domains; Building materials; Magnetic domain walls; Magnetic domains; Magnetic films; Magnetic materials; Magnetic properties; Semiconductor films; Silicon; Soft magnetic materials; Steel;
Journal_Title :
Magnetics, IEEE Transactions on
